XTR111_07 BURR-BROWN [Burr-Brown Corporation], XTR111_07 Datasheet - Page 18

• Manufacturer Part Number: XTR111_07
• Description: Precision Voltage-to-Current Converter/Transmitter
• Manufacturer: BURR-BROWN [Burr-Brown Corporation]

XTR111
SBOS375 − NOVEMBER 2006
18
Figure 13. 2-Wire 4mA to 20mA Current Loop Driver with Adjustable Voltage Regulator
3V Supply
0V to 2V
3V Supply
0.4V to 2V
NOTE: Input voltage range is set by the four external resistors. Q
Input
Figure 14. 2-Wire 4mA to 20mA Current Loop Driver for 0V to 2V Signal Input
Output
GI
GI
Input
GI
GI
25k Ω
R
20kΩ
3
R
5
R
150k Ω
R
10k Ω
4
NOTE: The input voltage contains the signal offset: for example 0.4V to 2V input
signal. The input signal and supply output are referenced to GND (pin10).
5
R
10kΩ
4
5
4
6
5
4
6
REGF
REGS
3V
VIN
REGF
REGS
3V
VIN
10
GND
1
VSP
7
1
VSP
1
7
can be a FET or a PNP transistor. Internal GND reference is GI.
SET
R
50.251Ω
SET
Current
SE T
R
50.251 Ω
Mirror
Current
S ET
Mirror
10
GND
OD
VG
EF
IS
OD
VG
EF
IS
9
8
2
3
Q
9
8
2
3
G
1
GI
S
D
G
Q
S
D
1
4mA to 20mA
4mA to 20mA
2−Wire
2−Wire
Output
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